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In hardware SPI module without remappable pins you cant use other pin for the same purpose.
The DO is actually PIN_C5 in the hardware but PIN_C4 in your code.
If you want a single frequency why dont you use a analog crystal oscillator.
For a single frequency sine output you can send the...
I don know whether its a software or hardware SPI, but if its a hardware then wrong pin configuration and this pins are not remappable.
I already once worked with this IC for FM.
I don know your application but I think you needed to put delay between SPI writes, so that it will be meaning full.
With the load use the bootstrapped triggering scheme. Use IR2110 and put connect the gate to the HO and put some minimal load to get start working.
Or use a optocouplerised firing scheme with a individual power supply.
In this scheme connect the 0V to 80V signal input instead of 300V line and...
:fight: That is the trick :fight:
When you give 0mA the transistor will be turned OFF and when you give 10 mA (for eg) the transistor will turn ON, but why did you give the current intermediate 0 and 10 mA ?
If you wont, then transistor will not work in linear region.
The thing is we cant assure that with IR2110 your configuration will work without any problems. It has more disadvantages than advantages. The main advantage would be its totem pole driver configuration.
But they are need not to be same when it comes to switching ON and OFF timing. Are you...
What is your switching(PWM) frequency ? Remember that already you are getting 10uS delay(switch ON and OFF) in opto stage you are using.
Also remember that you are putting 330ohm in series with Gate, which will increase your switching time. Incase of IR2110 it will supply 2.0A gate current.
There is no more Bootstrapping, Actually its possible to put 4 more transistors and you can eliminate IR2110 with use of optocouplers. but still the IR2110 will give the better switching experience.
It would be better with 1k gate discharge resistors in all the IGBT, otherwise there is a chance...
Hi can you post the code, so that there will be no confusions and we can give you some solution.
Looks like every piece of segment doesnt gets enough ON time time to make the segment glow, may be you can increase the maximum possible anode voltage of the LED otherwise you can split the big...
Designing a very high frequency counter circuit is very difficult and you will end up with very low difference in digital values.
Better try to construct a low frequency VCO with high variation in frequency.
I think you can simply design a VCO using 555 or 565 IC(I already did that once).
But the Ideal result is when IN is 0(CW or ACW is 0V) then the LO is 15V and HO is 0V.
(with no OFF signal)
The HO will give output only after turning ON and OFF any one of the Lower transistors.
Its like you are switching ON the Fan for 2 secs OFF and 1 sec ON as repeatedly then the fan will run slow.
If you turn OFF for 1 sec and ON for 2 sec then the fan will run comparatively faster (first one is 1/3 of rated power and second one is 2/3 of rated power).
So by adjusting the ON and...
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